Folding carton



June 1, 1954 Filed June 17, 1949 w. R. SAIDEL FOLDING CARTON 2SheegLs-Sheet l June 1, 1954 w s DEL 2,679,970

FOLDING CARTON Filed June 17, 1949 2 Sheets-Sheet 2 +55 39?] I? 15 7 I Ir Patented June 1, 1954 UNITED STATES saw rem OFFICE 2 Claims.

This invention relates to improvements in folding cartons and itconsists of the matters hereinafter described in and more particularlypointed out in the appended claims.

The invention is more especially concerned with a carton produced from aone-piece, paper board blank, cut and scored to provide a central panel,defining the width of the carton, a panel foldably joined to each sideof the control panel and forming the sides of the carton and sections,each of a width more than half the width of the central panel, joined toa side of a side panel and which sections overlap at their margins toform the bottom of the finished carton. Heretofore in such cartons, thecentral panel and portions of the side panels were cut and scored toprovide parts which formed transverse partitions for the carton and theoverlapping margins of said sections, which became the bottom of thecarton, were adhesively united so that the blank could be made into aflat folded sleeve. These sleeves were supplied to the user thereof, whohad to set them up into carton form for filling with the desiredcommodity.

A carton of this kind is illustrated and described in my co-pendingapplication Serial No. 82,221, filed March 18, 1949, now Patent Number2,519,760.

One of the objects of the present invention is to simplify and improvethe structure of the before mentioned carton in certain respects so thatthe same may be shipped to the user in a flat, non-sleevelike blank,capable of being set up into a carton wherein the side walls are soconnected by at least certain of the transverse partitions as to holdthe blank in its set up condition without relying upon the adhesivejoining together of the bottom sections for this purpose, as heretofore.

Another object of the invention is to provide, in a carton of this kind,a novel arrangement oi side walls and partition structure, wherein partsthereof interengage each other to hold the side walls against lateralspreading, as well as to hold the bottom sections against lateralseparation.

Also, it is an object of the invention to provide a novel arrangement oftongues and slits on the side walls and certain of the partitions which,when engaged, also limit the position in one direction to an uprightposition, and certain tongues on one of the bottom sections and partsintegral with said partition so interengage as to limit the movement ofthe said partitions out of the upright position in the other direction.

The above mentioned objects of the invention,

as well as others, along with the advantages thereof, will more fullyappear as the specification proceeds.

In the drawings:

Fig. 1 is a perspective view of a folding one piece paper board cartonembodying the preferred form of the invention, when in its set-up readyto use condition. a

Fig. 2 is a longitudinal vertical sectional View through the carton astaken on the line 2-2 of Fig. 1 and on substantially the same scale.

Fig. 3 is a bottom view of the carton appearing in Fig. 2.

Fig. 4 is a transverse vertical sectional View through the carton astaken on the line L4 and on a scale enlarged over that of Fig. 2.

Fig. 5 is a plan view of a cut and scored blank, from which the improvedcarton is made.

Fig. 6 is a fragmentary, detail, perspective view, on an enlarged scale,of parts toward one end of the carton and which will be more fullyreferred to later.

Fig. '7 is a horizontal, fragmentary sectional View, as taken on theline l-l of Fig. 6, on a scale enlarged thereover.

In general the improved folding carton is made from a one-piece cut andscored blank of paper board, such as. free bending chip board, bleachedmanila board, lined board, patent coated board, laminated board stockwith greaseproof sheeting or the like.

Referring now in detail to that embodiment of the invention illustratedin the drawings, Fig. 5 shows the blank from which a carton, such asshown in Fig. 1, is made.

. Said blank is substantially rectangular in shape and it is providedwith a pair of scored lines It and I l respectively and spaced equaldistances inwardly from and parallel with said lines are other outthrough lines it, and IS, and score lines Ma and E30. respectively. Thatpart of the blank between the lines 12, Ma and i3, l3a re spectivelyforms a mid panel M, which ultimate- 1y becomes the open top of thecarton. The parts of the blank between the lines it! and I2, [2a andbetween the lines H and I3, I30 form the two side panels 15-45 of thecarton and those parts of the blank outwardly of the lines #8 and i Iform two end panels or sections it and El respectively, that jointlymake up the bottom of the carton.

The mid panel is is cut transversely along lines i8, i9, 20 and 2|respectively. The lines l8, l9 and 2| terminatesubstantially at the cutand scored lines 12, Ha and i3, ltd while the line 2% extends beyondsaid last mentioned lines, as appears in Fig. 5.

The mid panel i l is provided with transverse lines 22, 23 and 24 oflongitudinally spaced perforations which facilitate bending of the partsupon opposite sides thereof into right angled relation. These lines ofperforation terminate at the lines I2, 12a and it, He. The cut andscored lines mentioned divide the center panel of the blank into two endsections 25 and 26 and intermediate sections Z'i, 2B and 2Q respectivelywhich, in the set-up carton, form the two ends and three partitions forthe carton, as best appears in Fig. l. The end sections 25 and 26, alongwith the intermediate section 2'1, have flange-like tabs 2511,2601; and27a respectively, joined thereto by the transverse score lines 22, 24and 23 respectively.

The ends of the sections 25, 25, 27,28and 29 are defined by certain ofthe scored lines |2a and I311, before mentioned and the ends of theflange like tabs 25a, 28a and 21a are defined by the cut lines i2 andi3, before mentioned.

At each end of the sections 25, 26, 21,28 and 253 respectively are wingextensions 30,3 l ,32, 33 and 34 respectively, joined to the saidsections by'the scored lines E20, and Kid. The wing extensionsmentioned, which are partially cut from the panels l5, 15, are ofgenerally triangular shape, with truncated tops, the bases beingconsidered as formed by the score lines 12a and 13a respectively.

By this arrangement of wing extensions 30 to 34 inclusivathere aredefined between them, triangularly shaped portions 35, the apexes ofwhich terminate substantially in the planes of the lines [2, 12a and [3,[3a respectively. In the finished carton these portions are disposed atthe top of the side walls thereof as formed by the panels l5l5 and eachportion 35 has a score line 35 about midway'the apex'andthe basethereof, the purpose of which will appear later. It is pointed out thatat each end of the panels i5i5 are portions 35a arranged in line withbut 'of half the size and shape of the portions 35. Said portions 3511are formed with score lines 3641 similar to and in line with the scorelines 36 and the purpose of said score lines 38 and 36a is to afford anoutward expansion of the panels i5, i5, in the setting up of the blankintocarton form.

In each of the wing extensions 39, 32 and Si r-i respectively are shortlines of longitudinally spaced perforations 22a, 23a, and 24respectively,

that are parallel with but ciiset from the associated lines of spacedperforations 22, 23 and 24 by an amount slightly more than the thicknessof the stock of the blank and thus there is defined in each of theseextensions, a triangular tab 31.

The sides or" the wing extensions 3e, 3! and 32 and the sides of thewing extensions 33, 34, jointly considered, extend at angles of 90 tothe plane of the cut score lines ii, in and I3, i3a respectively. A partof the sides, as well as the ends of said wing extensions are formed bycut lines 30:0, 31$, 32m, 33m and 3 35:, respectively and the remainingparts of said wing extensions are formed by fold lines 3531, 31y, 321133y and My respectively. Said fold lines extend from the cutscore linesi2, .i2c and i3, 3c to the fold lines 36 in the triangularly shapedportions of .the side panels |5i5. The lines just above mentioned bestappear in Fig. 5.

The panels or sections 36 and ii of the blank areeach of a width greaterthan half the Width ofthe midpanel Hi. Parts of the free margin of thepanel or section 16 are cut away to protransverse edge ilib thereof as aslit or cut iiic so that a portion of said panel or section l! adja--.cent the edge 5% forms a bendable tongue 4011,

having the width of said edge and a length approximating the length ofthe slit or cut 400.

The edge a of each recess 46 and the associated slit or cut 40c jointlyhave a particular relation with respect to the width of the mid portionof the flange-like tabs 25a and 26d of the endsections 25 and 26.andwhich tab portions engage under the tongues 4007. as best appears inFig. 6, when the blank is set up into carton form, as in Fig. 1.

One of the lateral edges of one of the recesses 4| forms a stop shoulderfor engagement by the edge of the mid portion of the flange-like tab 21aof the section 2? when the blank is in the setup condition, abovementioned.

With the arrangement of the tabs '38, 39 and recesses 40 and 4!, asshown in Fig. 5, and as before described, the tabs 38-49 on the panel l6are formed from those parts of the paperboard strip from which the blankis made, out from the panel or section ii to form the recesses Thus,there is no waste of stock in the production of successive blanks from astrip of paperboard stock.

Each end portion of each panel l5--l5 is cut through on lines 42 to formsubstantially triangularly shaped tongues 43, the apex ends of whichface each other as best appears in Fig'. 5.

Each wing extension 36 and 3! for the sections 25-46 of the mid panelid, is cut through on U-shaped lines 4 3 to form tongues 45, each ofwhich may be bent along its "base, which is parallel with and adjacentthose portions of the score lines i2al2a associated with the sectionsmentioned. When the blank is set up into complete carton form, thesetongues 43 and 45 register and are interengaged to and lock the sidewalls of the carton formed by the panels i5l5, to said wing extensions.When said tongues are so interengaged, they function, through said wingextensions and said sections 2525 to'hold the side Walls of the cartonagainst lateral separation.

In setting up the blank shown in Fig. 5 into carton form, one convenientway is as follows: the side panels |5-l5 are folded along the lines36-3S to extend downwardly from the center panel 14, after which thesections l1 and "5 are turned inwardly to fold along the lines H and H!so that the free margin of the section I! overlaps the free margin ofthe section it. In this turning inwardly of said section, the tabs 38and 38 of the section 16, which register with the recesses 453 and 4! inthe section 11, enter said recesses so as to overlap that part of thesection I? between the inner edges of the recesses and the fold line H,until the inner end of said tabs engage the inner edges of saidrecesses, as best appears in Fig. 3. When these sections have been sodisposed, they coact to provide the bottom of the carton of a widthapproximating the distance between the pair of cut and score linesl2-|2a and i3-l3a, with a double thickness central portion, formed bythe overlapped margins, before mentioned, extending longitudinally ofthe bottom. By the interengagement of the recesses and tonguesmentioned, the margins of said sections l6 and I! not only mutuallysupport each other, but said sections are locked against relativelylongitudinally shifting, and this without the use of an adhesiveconnection between said margins.

The thus far set up blank has the form of an open ended tube, the top ofwhich is formed by the sections 25, 26, 21, 28 and 29 with the wings 3B,3!, 32, 33 and 34 of said sections projecting laterally outward beyondthe sides of the tube, as provided by the panels l5-l5.

When the blank is in its partially set up tubular form and it is desiredto complete the same by hand operations, the various sections aremanipulated to dispose them in end and partition forming arrangementshown in Figs. 1 and 2. As the manipulations of the sections 25 to 29inclusive are generally the same, with the exception of the end sections25 and 26, a detailed description of the manipulation of the one of saidsections will sufiice for all and in this instance the section 25 ischosen as an example.

With the bottom of the thus far partially set up carton held againstmovement, say by holding the same in the left hand, downward fingerpressure is imposed upon the section 25, near its flange 25a, the wings30 swinging on the score lines I2a-I3a to turn upwardly as they start toswing inside the side walls 15. When said section 25 has been swungdownwardly to be disposed at about an angle of 4 to the bottom of thecarton, the tongues 43 come into register with the tongues 45 of saidwings. Inward pressure is then imposed upon the registered tongues43-45. As the section 25 is further swung toward and into aperpendicular position, to form one end of the carton, the apex ends ofthe tongues 43 enter behind that part of the wings 30, between thoseparts of the associated slits 44 that are parallel with the truncatededges of the wings 39 and said edges of said wing as appear in Fig. 7.When the section 25 reaches its perpendicular position, the edge of saidpart of each slit 44 engages in the spaced apart ends of the slits 42,as appears in Fig. 6, and this looks the partition in a perpendicularposition to form one end of the carton. Also, by this arrangement, saidpartition is locked against further outward movement beyond thisperpendicular position.

It is pointed out at this time that as the section 25 is initiallydepressed and the wings 39 thereof turn upwardly along the score linesl2a-i3a, said wings also swing about their hinged connection with thetabs 35, through the fold lines 30y, to a position to engage against theinside of the side walls l5, I5, as before mentioned. When said section25 is disposed in its perpendicular position, forming one end of thecarton and the tongues 43 and 45 are engaged, as before described, thesection 23 now ties the two side walls l5-l5 together and holds themagainst lateral spreading.

Also, when the section 25 is in its upright or perpendicular positionforming one end of the carton, its flange 25a will engage flatwise uponthe bottom of the carton (as formed by the sections I 6 and I1) and acentral portion of said flange swings past the associated tongue 40d ofthe section II to clear its edge and is then moved back to engage undersaid tongue. as best appears in Figs. 6 and 7. It is pointed out thatthere is suflicient flexure in the mid portion of the section 25 in itsperpendicular position to permit the same to spring and permit the midportion of said flange 25a to pass the edge of the tongue 40d and thenbe moved back under the same. When the flange 25a and tongue liid havebeen so engaged, they cooperate to prevent any swinging movement of saidsection 25 inwardly of the carton. When the section 25 has then beenlocked in its perpendicular position against movement outwardly orinwardly of the thus far set up carton, an end portion of the flange 25ais engaged upon a part of the section l6 and the other end portion ofsaid flange is engaged upon a part of the section [1.

The thus far set up carton is turned end for end and the other endsection 26 is manipulated in the same way as just described to providethe other perpendicular end of the carton.

The sections 21, 28 and 29 are then manipulated in the same way, that isby finger pressure upon their free margins, until they assume theirperpendicular positions, wherein the associated wings 32, 33 and 34thereof engage the inner surface of the side walls of the carton. In thecase of the section 21, when it is in its perpendicular position, itsflange 21a will engage flatwise upon the bottom of the carton, asprovided by the sections l6 and i1 and the free edge of a part of saidflange is engaged with a free edge of one of the tongues 38 of thesection l6, Where it overlaps upon a part of the section l'l.

As the various sections 25, 26, 21, 28 and 29 are swung downwardly fromtheir horizontal position, toward the upright position and as the wingextensions turn upwardly along the lines I2, I21; and I3, l3a, they willalso fold along the lines 30y, 3iy, 32:1 33 and 34y respectively toswing in toward the inner surfaces of the walls or panels [5. By reasonof the fold lines 36 and 33a, the triangular portions 35 and 35a. canbulge or expand outwardly, to permit the transition from the horizontalposition to the vertical position, along the inner surfaces of theassociated walls or panels [5, l5. 7

In the manipulation of the sections 28, 29, they swing downwardly inopposite directions and as each section is of a depth less than thedepth of the carton, the bottom edges of these two sections will bedisposed above the bottom of the carton, as appears in Figs. 1 and 2.

It is to be noted from said Figs. 1 and 2 that the wing extensions 30 to34 inclusive provide a double thickness of paper board for each sidewall and in connection with the respective sections 25 to 29inclusively, tie said double thicknesses of paper board together, thusproducing along each side of the carton, parts of angle bars crosssection capable of withstanding heavy vertical compression loads withoutyielding or buckling.

Thus, the filled cartons when stacked, one upon the other, will amplyprotect the contents of the carton without damage due to the weight ofthe filled cartons above.

When the carton is in its completely set-up condition, as appears inFig. 1, the spaces in the side walls left by the wing extensions 30 to34 inclusive, are symmetrically spaced apart and adjacent spaces areseparated by symmetrical parts as formed by the triangular portions 35of said side walls.

:It is pointed out'that in the completely set-up cartons, parts of theseportions 35 adjacent the fold lines 39 protrudeor bulgeslight'lyoutwardly from the remainder of the side wall and do not lie flatagainst the portions 3 to 34 inclusive. Thus said parts of said portionsact as cushions to absorb lateral shock for adjacent cartons on eachside thereof and this affords further protection for the contents of thecarton, which contents are often in themselves of an easily broken ordamaged character.

It will also be noted that an edge of each tab 3'! engages the verticalface of the adjacent full partition and overlaps or overlies upon theends of the flanges 25a, 26a and 21a, of the partitions 25, 2B, and 2?.This aids in strengthening the structure.

'Cartons of this kind, when containing the desired commodities, aregenerally wrapped in a transparent film-like sheeting and when theimproved carton herein is so Wrapped, it presents a neat and attractiveappearance and a good and sanitary display of the commodity.

A carton made in accordance with the above may be produced from a blankwhich does not involve a waste of the stock of which the blank isformed. In its set-up condition, as shown in Fig, l, the partitionsmaterially strengthen the carton and permit a stacking of the filledcartons, one upon the other, in a manner withstanding considerable loadpressure of the filled cartons above.

The partitions mentioned also serve the purpose of holding the two sidesof the completed carton perpendicularly to the bottom and againstbellying or bowing outwardly before wrapping the filled carton in apaper sheet or the like. Thus the necessity of tying a string or cordaround the filled carton, before wrapping the same, is eliminated. Assaid partitions are integral parts of the carton itself and are joinedor connected to the sides of the carton in the manner described, theyafford a full visibility to each compartment between said partitions.

While in describing the invention, I have referred in detail to form,construction and arrangement of the various parts of the carton, thesame is to be considered only in its illustrative sense and therefore Ido not Wish to be limited thereto except as may be specifically setforth in the appended claims.

I claim as my invention:

1. In a folding one-piece paper board carton, side walls and a bottomcomposed of sections hinged to the side walls and, overlapping at theirfree margins longitudinally of the bottom, said margins of said sectionsbeing formed with transversely extending interengaging tongues andrecesses holding said margins against relative longitudinal shifting,members extending between said side walls perpendicular to said bottom,each of said members having wing extensions each engaged with the innersurface of aside wall and each having a connection at the top with theside wall with which it is engaged, and means for securing at leastcertain of said wing extensions to said side walls, whereby said sidewalls are connected together through said members and hold saidoverlapping margins of the bottom sections against lateral separation.

2. In a folding one-piece paper board carton, side walls and a bottomcomposed of sections hinged to the side walls and overlapping at theirfree margins longitudinally of the bottom, said margins of sectionsbeing formed with transversely extending interengaging tongues andrecesses holding said margins against relative longitudinal shifting,members extending between said side walls perpendicular to said bottom,each of said members having wing extensions each engaged with the innersurface of a side wall and each having a connection. at the top with theside wall with which it is engaged, and coacting engaged tongues andslits on at least certain of said wing extensions and said side walls,whereby said side walls are connected together through said members andhold said overlapping margins of the bottom ections against lateralseparation.

References Gite-d in the file of this patent UNITED STATES PATENTSNumber Name Date 525,585 Brown Sept. 4, 1894 717,089 Ferguson Dec. 30,1902 1,686,521 Harrison Oct. 9, 1928 1,733,663 Hale Oct. 29, 19291,785,898 Hale Dec. 23, 1930 1,985,579 Reich Dec. 25, 1934 2,007,088Jones July 2, 1935 2,0765% Holmes Apr. 13, 1937 2,319,380 Wells May 18,1943 2,326,390 Piatt Aug. 10, 1943 2,328,615 Butterman Sept. '7, 19432,346,206 Broderick Apr. 11, 1944 2,372,351 Arneson Mar. 27, 19452,527,701 Buttery Oct. 31, 1950

